/Engine/Source/Editor/UMGEditor/Public/IHasPropertyBindingExtensibility.h
Does this extension want to extend this property in the widget?
bool CanExtend ( const [UWidgetBlueprint](API\Editor\UMGEditor\UWidgetBlueprint) * WidgetBlueprint, const [UWidget](API\Runtime\UMG\Components\UWidget) * Widget, const [FProperty](API\Runtime\CoreUObject\UObject\FProperty) * Property ) const